Reciprocal Theorems in Radio Communication

Carson, John R.

doi:10.1109/jrproc.1929.221772

Cited by 64 publications

(31 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This equation is known as the Rayleigh -Carson reciprocity theorem [4] . To better understand this theorem, we introduce a new concept called reaction [5] .…”

Section: Rayleigh -Carson Reciprocity Theoremmentioning

confidence: 99%

Electromagnetic Theorems and Principles

Jin

2010

Theory and Computation of Electromagnetic Fields

View full text Add to dashboard Cite

“…This equation is known as the Rayleigh -Carson reciprocity theorem [4] . To better understand this theorem, we introduce a new concept called reaction [5] .…”

Section: Rayleigh -Carson Reciprocity Theoremmentioning

confidence: 99%

Electromagnetic Theorems and Principles

Jin

2010

Theory and Computation of Electromagnetic Fields

View full text Add to dashboard Cite

“…The details of the underlying theory are not reiterated here, and the interested reader is referred to the comprehensive treatment which can be found elsewhere -see, for example, [9][10][11][12]. We cover here only the practical implications for cellular radio communication systems, and more specifically those for LTE TDD.…”

Section: Reciprocitymentioning

confidence: 99%

Paired and Unpaired Spectrum

Anderson¹

2009

LTE – The UMTS Long Term Evolution

View full text Add to dashboard Cite

Expansion of consumer demand for cellular communications, as well as for the multitude of other wireless applications, places a corresponding strain on the basic physical resource needed to support them: spectrum. The suitability of spectral resources to a particular application is governed by a range of inter-related factors of a technological, commercial and regulatory nature. Technological considerations influencing the choice of frequency band include propagation characteristics, antenna size and separation, the viability of Radio Frequency (RF) circuitry, and design implications resulting from the need to coexist with systems operating in neighbouring spectrum without causing (or suffering from) undue interference. These considerations determine in part the commercial viability of a system. Signal range and spectral efficiency govern coverage and capacity, and hence determine the required number of base station sites and the capital outlay, whilst terminal costs and form factor affect the acceptability of products in the marketplace.From a regulatory perspective, in spite of significant coordination at an international level through the International Telecommunications Union (ITU), regional variations in governmental policy regarding spectrum and technology are inescapable due to the differing needs of each region and the different historical factors which have shaped their presentday spectrum allocations. Thus, the availability of globally-harmonized spectrum for a particular technology cannot be guaranteed. Furthermore, in many regions, a tendency towards technology neutrality within viable spectrum assignments (see, for example, [1]) is beginning to liberalize the traditional one-to-one mappings between technologies and their addressable spectrum and is hence opening up new markets.Against this background, a key design goal of LTE has been to enable deployment in a diverse range of spectrum environments in terms of bandwidth, uplink-downlink duplex LTE -The UMTS Long Term Evolution: From Theory to Practice

show abstract

“…Time-reversal is based on the assumption that the propagation medium is reciprocal [12]. However, there are two factors that can invalidate the reciprocity theorem in the ionospheric environment: First, time-varying ionospheric inhomogeneties can make the Green's function between two points change during the beam transit time.…”

Section: Reciprocitymentioning

confidence: 99%

High-resolution over-the-horizon radars using time reversal

Paek¹,

Choe²,

Bernhardt³

2009

SPIE Proceedings

View full text Add to dashboard Cite

A method of high resolution over-the-horizon radars (OTHRs) using time-reversal is described. The method uses timereversal in the multipath-enriched ionospheric environment in order to achieve the extended virtual aperture. Also, the double-pass conjugate image scanning scheme allows imaging of non-cooperative targets without requiring apriori knowledge of environmental conditions. Initial theoretical and experimental results are provided.

show abstract

Reciprocal Theorems in Radio Communication

Cited by 64 publications

References 1 publication

Electromagnetic Theorems and Principles

Electromagnetic Theorems and Principles

Paired and Unpaired Spectrum

High-resolution over-the-horizon radars using time reversal

Contact Info

Product

Resources

About